Location History:
- Lake Zurich, IL (US) (1987)
- Des Plaines, IL (US) (1994)
Company Filing History:
Years Active: 1987-1994
Title: David L. Blanchard: Innovator in High Definition Television Technology
Introduction
David L. Blanchard is a notable inventor based in Des Plaines, IL (US). He has made significant contributions to the field of high definition television technology, holding 2 patents that showcase his innovative spirit and technical expertise.
Latest Patents
One of his latest patents is a high definition television signal format converter. This invention includes a system that converts high definition analog RGB video signals into digitally encoded signals. The signals are then compressed by a video encoder to fit within a six megahertz bandwidth. The system also incorporates a Reed-Solomon error control system for broadcasting as an NTSC-type signal. The high definition television receiver is designed to extract compressed video, audio, and ancillary data signals, applying error correction to ensure high-quality display. Additionally, a high definition digital video tape recorder is integrated into the system, allowing for seamless recording and playback while maintaining error control.
Another significant patent is the adaptive comb filter and interpolator. This invention combines scan conversion circuitry with adaptive comb filtering to reduce memory storage requirements. The processing of received television signals is enhanced by utilizing combined circuitry and a single memory, which is more efficient than performing separate functions. The control circuit governs the memory to read and write digitalized video information, ensuring that the scan rate converted signals are effectively provided to the video display circuitry.
Career Highlights
David L. Blanchard has had a distinguished career at Zenith Electronics Corporation, where he has played a pivotal role in advancing television technology. His work has contributed to the development of high definition systems that enhance the viewing experience for consumers.
Collaborations
Throughout his career, Blanchard has collaborated with notable colleagues, including Paul A. Snopko and Raymond C. Hauge. These partnerships have fostered innovation and have been instrumental in the successful development of his patented technologies.
Conclusion
David L. Blanchard's contributions to high definition television technology reflect his dedication to innovation and excellence. His patents demonstrate a commitment to enhancing the quality of television broadcasting and viewing experiences.